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math.GT2024
Foam cobordism and the Sah-Arnoux-Fathi invariant
Mee Seong Im, Mikhail Khovanov
This is the first in a series of papers where scissor congruence and K-theoretical invariants are related to cobordism groups of foams in various dimensions. A model example is pro…
math.GT2021★ 3 cited
One-dimensional topological theories with defects and linear generating functions
Mee Seong Im, Paul Zimmer
We study the Gram determinant and construct bases of hom spaces for the one-dimensional topological theory of decorated unoriented one-dimensional cobordisms, as recently defined b…